#include <iostream>
#include <cstring>
#include <cmath>
#include <vector>
using namespace std;

int cnt = 0;
bool check(string str)
{
    for(int i = 0; i < str.size() - 4; i++)
    {
        if((str[i] == 'R' || str[i] == 'r') && (str[i + 1] == 'i' || str[i + 1] == 'I') && (str[i + 2] == 'o' || str[i + 2] == 'O') && (str[i + 3] == 'i' || str[i + 3] == 'I'))
        return true;
    }
    return false;
}

int main()
{
    string s,t;
    cin >> s >> t;
    int f1 = check(s);
    int f2 = check(t);
    if(f1 == 1 && f2 == 1) cout << "Either is ok!" << endl;
    if(f1 == 1 && f2 == 0) cout << s << " " << "for sure!" << endl;
    if(f1 == 0 && f2 == 0) cout << "Try again!" << endl;
    if(f1 == 0 && f2 == 1) cout << t << " " << "for sure!" << endl; 
    return 0;
}